Machine for making fiber tubes.



c. MEHLUM. I MACHINE FOR MAKING FIBER TUBES.

APPLIOATION FILED DEC. 26; 1912. 1,969,971. Patented Aug.12,1913.

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G. MEHLUM.

MACHINE FOR MAKING FIBER TUBES.

APPLICATION FILED DEC. 26, 1912.

mma Aug. 12, 1913.

Eli HlllillllHlllll IHIII Hill \Ii ll G. M EHLUM.

MACHINE FOR MAKING FIBER TUBES.

APPLICATION FILED DEU.26. 1912. I 1,069,971. Patented Aug. 12,1913.

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CASPER MEHL'UIYI, (3F CAMBRIDGE, MASSACHUSETTS.

MAGHINE son MAKZHG TUBES.

Epplicetion filed December 2 19%.

T all whom it may concern v Be it known that I. CASPER li'lEIIL'UM, a subject of the King of Norway, residing e Cambridge, county of Middlcsex. State ofthe tube is formed is prepared in a sheet or web wound into a roll from which it rewound on a mandrel for :3: sufficient number of layers or windings to make a tube of the requisite thickness, the web passing through an acid bath oirthe way from theweb roll to the mandrel. hen the tube has been built up tothei'equisite thickness the Web is cut so as to free the unwound portion of the web from the portion. oiifthe mandrel, and the tube thus formed is removed from the i'nandrel. The mandrel is mounted on a shaft journaled in suitable bearings, and. for the purpose of conveniently withdrawing the tube from the mandrel endwise it is desir-able to have one of the bearings T1130\"- z'ihE with relation to the'shai't so not to interfere with the withdrawing oi"- the tube. One feature (it my invention relates to an improved movable hearing, and means for moving it.

Other features of the invention relate to the means for starting and stopping the machine.

There are still other features of the invention all of which will helicre'inafter fully described.

The invention williic full? understood from the following description taken in connection with the accompanying drawings, and the novel features will be pointed out and clearly defined in the claims at the close of the specification.

In the drawings: Figure 1 is n end ele" vution partly broken away a nnchine cinbodying the invention. as viewed from the right of Fig. '2. Fig. 2 is a front elevation partly in section, the middle portion of the mandrel and the connected parts being broken away for convenience of room. Fig.

Specification of Letters Patent.

the left; hand end of Fig;

tionsl detail on :1 reduced scale of the man- I the mandrel cellnpsed.

fatten-ted Aug. 12, 1933.

Serial No. name.

3 is an end elevation viewed from the opposite end from Fig. 1, that is, VlW6l from.

Fig.4 is a sec- (liel and its operative parts viewed when is an end view of the collapsed mandrehpartly in section. Fig. ('3 is a detail View showing the means for automatically stoppingthe machine. Fig? .is a section on line 77 of Fig. 1.

Referring non? tog-the drawings,-1 .i'epiesents the frame 01 bed. of the machine.

2 represents the "Web or sheet which is-run from it roll, not shown, through the acid bath 3 in the tank 4, thence between the scrapers 5 to remove the. surplus acid and passes up over and under the pi'esser roll '6. thence s-ronntl the mandrel A. As the tube hugs the ne idrel vet ti tli mandrel slnnihl rablyhei e c I type so that the built np tulie can he ic moved. The preferred form is that shown in the druii'ings'antl which is made the sii. Ject of a (llYlSlODfil application hereof i rial No. 751,792. but it is shown on:

ing the invention of his application. althoiigh itis to be understood. that the claims herein are not to beliinited to use with the particular form of mandrel herein shown.

In the preferret uction the form of cons 1 mandrel 2%. is composed of a plurality, pr'ei ei'nlily tour in i'iiiinhei', of segmental plates '5, each of wl'iich. is a qnaitei' cylinder of the same radius. so that when matched together the four plates together will form a cylin r .if'retei'ably -the ed of each. one oi t" segmental plates betel shown in i 5, so that the plates may more i'ea lllf! slide over each other to ct .i se the Each V l he, to its iiin ci' face at 585195 of cure is pivotall v "connecteclu series it) which form s nports tor A shai 't 12 pass s lengths aw -g 3 w a l T 11v 'ar i Lenlvi. .ii inc in ncie, an -as flkecl y U ia q is 13 i moinie ..-.i e eoi. seiies oi ones WJIC i of hangers =1 incl 11. e .izro h the Q in,

itndinal bars 11 by means of the scribed herein for the purpose of explz-ii 9. to which re pivotslly connected with the several ioni i .L']?

bars 11 is pivotallyconnected by' links 15* with a hub or collar 16mounted fast on a sleevev 1'? in which the shaft 12 is slidable. Means are provided to cause the shaft 12 and sleeve 17 to rotate together as will be hereinafter described. Preferably the hunt ends of the bars 11 are formed with a bent "portion 18 for convenience of connecting with the, links 15. The sleeve 17 through the/stare 12 passes is mounted in 'bearin 19in the frame 20 while the other end orthe' shaft rests in a semi-cylindrical bearing 21-mounted on a swinging bracket frameof the machine.

22 for the purpose of enabling the bearing to be strung out of engagement with the shaft, as will be hereinafter described. This bracket 22 is formed with ears 23 which are perforated to allow the hinge pin 24 to pass loosely through said ears whereby the said bracket is hinged onsaid pin 24. The

said pin 24 is mounted fast in lugs 25 which pro'iectfrom the upright portion 261 of the The lower ear 23 rests upon the hub 26 of an arm 27, saidhub 26 being perforated to allow the loose passage of the pin 24' through said hub, the arm 27 Testing upon a cam 28 mounted on a shaft 29. Said cam 28 is adapted, when the high pan of said cam is inengagement with said am 27, to hold said arm and thereforethe bearing bracket 22 in the position shown iniiig. 3, but when said cam is 1:0-

. t ated, bringing the lower part of the cam into engagement with the arm 27 said arm 27 will. descend under the pressure of the bearinggbracket 22, allowing. the bearing bracket todrop down with it, thereby freeing the semi-cylindrical bearing 21 from the shaft 12, and the bearing bracket 22 can also'he swung around on the pin 24 entirely free from'its transverse position across the end of themandrel. The shaft 29 on which cam 28 is mounted is actuated by means of a crank arm 67 mounted fast on the shaft and provided witha handle 68.

Mounted fast on the forward end of the sleeve 17 is a gear wheel 30 which engages anarm 33 to which is pivotally connected with a gear 31 mounted on a shaft-32. Projecting from the face. of the gear 30 is a handle 34 which has a link connection 35 with the forward end of the shaft 12, so

thatjby means of said handle 34 the shaft 12 can be lugs By reason of the connection of the 'handle 34 with both the gear 30 and the shaft 12, said shaft 12 will rotate with said gear and with the sleeve 17; Means'are pro- -.Pivot ed to the side of the handle 34 is it moved longitudinally in its bear-.

the boriesll? The front end of each of thefI- lever 105 carr in stud 106 which extends fthrough a hole in the handle and is adapted to engage in a hole in an arm 36 which proj acts from the side of the gear 30. A spring 107 normally holds the stud 106 in engagement with said hole in the arm '36, as shown in Fig. 1 to lock the handle so that the shaft 12 will not be moved longitudinally, but will be free to rotate with the gearBO said lever, the lever will be'turned to disengage the pin from the socket in the arm 36 so that the handle may be pulled back; as shown in Fig. 4, thereby pulling the links 14 into the angularposit-ion shown in said Fig. 4 and drawing the bars 11 inward toward the shaft and. thereby drawing tion shown in Fig. 5 nearer to theshaft. The pivoted side of each segmental plate 7 will slide partially under the free side of the adjacent segment. I

viounted fast on shaft 32 is a pulley 37 driven by a belt 38, thereby driving gears 31 and 30 to rotate the mandrel. Mounted loose on said shaft 32 is a pulley 39. Shipper bars 40 extend on either side of the belt 38, being mounted on an endwise movable shaft 41, whereby the belt may be shifted from the fast pulley'to the loose pulley or the reverse, so that when the belt is shifted to the loose pulley the shaft 12 and the mandrel will be stopped from rotation. A hand lever 42 having a link connection 43 with the shaft 41 is provided whereby the shaft may be moved endwise to shift the belt.

ismworm 44 which engages with a worm gear 45 on the shaft 46. Mounted loose on the shaft 46 is a pinion 49 with which a clutch 50 which is fast on said shaft is adapted .to engage to cause the said pinion to rotate with the shaft. A spring 51 coiled around pinion will revolve with the shaft. A verti' and is slidable in guides 53. A stop '54 limits the downward movement of the-rack bar. -Projecting from the rack bar 52 is a stud 55 which is preferably adjustable vertically on said rack and which as the rack rises is adapted to engage one arm 56 of a three arm lever 57 pivoted 0n stud 58 to slightl'fturn said lever 57.- 'A lever 61 pivoted on said stud 58 projecting from the frame of the machine engages an annular groove in clutch 50., A. second arm 59 of said three arm lever 61 to disengage said clutch 50. A third armward and is normally in engagement with a vent the endwise movement of the shaft 41 lVlouiptedfast on the sleeve 17 of shaft 12 62 of said three arm lever extends downand sleeve 17 By pressing on one arm of the segmental plates 7 inwardinto the posi said shaft 46 normally holds the clutch in engagement with the pinion 49 so that the I cal rack bar 52 engages with said pinion 49 is adapted to engage a pin 60 on said lever cam faced block 63 on the shaft 41 to pre-v block so that shaft 41 may respond to the pull of the spring 64 and thereby'cause the shipper arms 40 to move the belt 38 from the fast pulley to the loose pulley 39 and thereby stop the mandrel. The continued pull of 50 is disengaged from the gear 49 the rack 52 will drop until it strikes the stop 54, as already described. The operator will then by hand release the lever 34 from its locked engagement with the gear wheel and turn it over to the right from the position shown in' Fig. 2 to that shown in Fig.4: pulling the shaft 12 longitudinally to the right and thereby pulling the links 14 from their ver-.

tical. position shown in F 2 to the angular position shown in Fig. 4, and pulling the links 15 more nearly parallel with the shaft,

and thereby drawing the pivoted sides of the segments 7 inwardly, as shown in Fig. 5, which will be allowed by reason of the bev 1 eled edges of said segment plates, thus partially collapsing the mandrel so that the built up tube will be loose on the mandrel. The operator will then pull the lever 67 to the right from the position, shown in Fig.

I 3, so as to bring the high part of the cam 28 out from engagement with the underside of the arm 27, so that the arm 27 will drop, thereby allowing the bracket 22 to drop out of engagement with the shaft 12. Then said bracket 22 will be swung around on its pivot so that there will be no obstruction to pulling the fiber tube endwise off of the collapsed mandrel. Before attempting to withdraw the tube from the mandrel the web of fiber will be cut with a knife to sever the unwound portion from the tube portion. When it is desired to start the machine again the swinging'b'earing 22 will be swung around into its position transversely of the end of the mandrel and the lever 67 will be turned so that the cam 28 will lift the arm 27 and *thereby lift the bracket bearing into position to engage the shaft 12. The lever .34 will be turned up into vertical position and lockedso as to expand the mandrel and retain the shaft against endwise movement. Then the lever 42 will be turned to the right into the position shown in Fig.2 so as to shift the driving belt 38 from the loose pulley back onto the tight pulley, and then the machine will start for another cycle of movement.

The presser roll 6 is preferably heated'so' mandrel-on which the tube is built up, means that it will warm the'acid in the sheet and make it stick to the sheet underneath.

The arm 56 of the three arm' lever .is preferably provided with acounter weight 86 t'ocause the said lever to swing back on its pivot into the normal position of Fig.1 .When it is free to do so.

I claim 1. In a machine for making fiber. tubes, :1. mandrel on which the tube is built up, means for rotating said mandrel,'means for disengaging the driving mechanism for said mandrel, avertically reciprocable member, clutch and gear connection whereby the re tation of said mandrel driving'mechanism ralses said vertically reciprocable member,

75 means whereby said vertically reciprocahlemember. when it reaches a predetermined elevation controls the operation of the engaging means of the driving mechanism to stop the rotation of the mandrel, and

means controlled by the movement of said disengaging means for the driving meehar nism ofthe mandrel to also disengage the clutch of the driving connection which raises said vertically reciprocable member, said vertically reciprocable member being free to automatically drop to its initial posi-' reciprocable member at a predetermined point in its upward movement to turn said lever through a portion of its stroke in one direction and separate means controlled by said partial stroke of the lever to still further rock the lever and thereby stop the rotation of the mandrel. 1

3. In a machine for making fiber tubes, a

mandrel on which the tube is built up, means for rotating said mandrel, a vertically re ciprocable member, intermediate mechanism whereby said reciprocable member is raised by the rotation of the mandrel, rocking lever, one arm'of which is engaged by sai reciprocable member at a I edetermined point in its upward'nioveuse 1 turn said lever-through a portion of its stroke in one direction and separate means controlled by said partial stroke of the lever to still further. rock the lever and thereby stop the.

rotation of the mandrel, said additional movement of said lever disengaging the driving connection which elevates thesald reciprocable member, said reciprocable member beingthereby rendered free to automatically descend to its initial position. 4. In a machine for making fiber. tubes, a

for rotating saidma'ndrel, a vertically reciprocable member, intermedi ate mechanism whereby said reciprocable member is raised 'by the rotation of the mandrel, athreearm i accent/r i rocking lever, one arm of which is engaged by said reciprocable member at a predetermined point in its upward movement to turn said love! through a portion of its stroke'in one direction, means for disengaging said driving mechanism from'driving connection with the mandrel, means; whereby a second arm of said rocking lever normally holds In check said disengaging mechanism, said secand arm. "being moved out ot restraint on said disengaging mechanism by said partial movement of the lever whereby said chsengaging mechanism is rendered operative, the

movement of said disengaging mechanism still furtherrocking saidlever, and means whereby said further movement otthe rocking lever causes the third arm of said lever to disengage the driving mechanism which elevates said vertically reciprocable'member, said vertically reciprocable member being free to drop to its initial position when the driving mechanism is dise gaged.

'5. In a' machine for mailing fiber tubes, a mandrel on which the tube is built up, means for rotating said mandrel, means for 'disen gaging the drivin mechanism for said man drel, a vertical y reciprocab e .member, clutch and gear connection whereby the ro-- tation of said mandrel driving mechanism raises said vertically reciprocable member, means whereby said vertically reciprocable member when it reaches a predetermined elevation controls the operation of the disengaging means of the driving mechanism to stop the rotation of the mandrel, and means controlled by the movement of said disengaging means for the driving mocha ni-sm ofthe mandrel to also disengage the clutch of the driving connection which raises said vertically reciprocable member.

6. In a machine for making fiber tubes, 2- mandrel on which a web is wound to build up the tube, a rotary shaft on which the mandrel" is mounted, driving mechanism for actuating said'mandrel shaft, a vertically reciproca-ble member, a rotary shaft having intermediate connections whereby said reciprocable member is raised and hav ing, connection with the mandrel shaft whereby said shaft which actnates said reciprocable member is actuated'by the said mandrel shaft, a three arm lever having one arm whichis adapted-to disengage the driving connection with said reciprocable mom-- be! and having another arm which is adapted'to control thedisengaging of the driving mechanism from driving connection with the mandrel shaft and having a third arm which is engaged by a projection on said res ciprocable'member at a predetermined point I in the upward movement of said reciprocable member whereby the driving mechanism is disengaged from the mandrel shaft.

Z. In a machmetor making fiber-tubes, a

mandrel on which a 'web is wound to form the tube, a rotar shaft on which {said mandrel is mounte a vertically reciprocable rack bar, a rotary shaft on which is loosely -mounted a pinion engaging with said rack shaft wherebywhen the clutch is engaged the rack bar will be lifted, a driving mecha 'nism having driving connection with said mandrel shaft, shipping mechanism-which '75 is adapted to disconnect the driving mechanism from driving connection with .said mandrel shaft, means including a pivoted le ver for normally retaining said driving mechanism in operative connection with the mandrel shaft, a, projection on said rack bar which when the rack has been raised a redetermined distance turns said lever an causes the mandrel shaft to stop rotation, and means actuated by. the movement of the shipper for the driving mechanism of the mandrel shaft to trip the clutch of the rack bar shaft.

8. In a machine for making fiber tubes, a rotary mandrel onwhich sheets of fiber are wound to form a tube, a rotary shaft on which said mandrel is mounted, driving mechanism therefor, a vertically reciprocsble rack bar, gear connection between said rack bar and said mandrel whereby the ro- 9'5 tat-ion of the mandrel shaft raises the rack bar, said gear connection including a shaft on which the rack engaging gear is loosely mounted, clutch connection between said rack engaging gear and said gear actuat ng .100

shaft, a clutch lever connected with said clutch, a three arm lever having one'arm which is adapted to engage said clutch lever to disengage the clutch, a projection carried by said rack bar which is adapted to engage another arm of said three arm leveron the u ward movement of the rack at 'a predetermined'point to partially turn said lever,

a slidable shaft carrying a shipper which. is adapted to disengage the driving mechanism 'from operative connection with the mandrel shaft, a cam block on said shipper shaft which is normally engaged by the third arm of said three arm lever to prevent movement of the ship er shaft, saidthree arm lever being turns by the engagement of the stop on the rack bar with said second arm oif said lever to move said third arm out of stop engagement with said camblock, means whereby said shipper shaft will then be moved'to disengage the driving mecha 'nism of the mandrel actuating shaft, and

thereby stop the rotation of the mandreh the said movement of the ship 1' shaft causingsaid 'cara block to-still tort or turn the said three arm lever, and thercbyfldisengage" the clutch rif'gthegrack bar pinion; p

9, lo a machine for nam fibertubesgja when said elevtating mechanism is disens s d- I mandrel on which thetube is built up, means for rotating said mandrel, means for disengaging the driving mechanism for said mandrel, a reciprocable member, clutch and gear connection wherebythe rotation of said I mandrel driving mechanism moves said re ciprocable-membenl n one directlon, means whereby said reiprocable member when it "reaches a predetermined position controls 1'0 the operation'of the disengaging means of the" driving mechanism to stop the rotation iof the mandrpl, and means controlled by the jmovementof; said'disengaging means for nec'tion wh ich" moves ,said rec procable the mechanism of the, mandrel to 'alsd disengag the clutch' of the drivingcon- "dietary mandrel, a rotary shaft on which '2 v staid "mandrel ismounted, driving mechanism forsald mandrelg' a vertically reciprocable stop, intermediate mechanism including therein clutch mechanism whereby the driving,mec'hanism of the mandrel raises said step, a shipper which is adapted to disengage'the driving mechanism from op- 'jerativeconnection with the mandrel shaft,

-meichanismwhich normally prevents movement of theshipper, andwliich is moved to release said restraint by the upward 'flniovement of said 1 stop! mechanism which when said restraint is released actuates the 'fimech'anismof the mandrel shaft, said re- 3 straining mechanism for the shipper being said' shipper" to disengage the driving p further actuated by the movement of the said' shipper to disengage from driving connection with the stop the elevating mechanism] thereof, said stop being automaticallyreturned to its normal position lLln a machine for making fiber tubes,

' cable 'stop, intermediate mechanism Where av mandrel on which the tube is built up, means for rotating said'niandrel, a reciprobysaid stop is moved by the rotation of the 'mandreha three arm lever, one arm of saidlever being engaged by said reciprocableifstop. at'a predetermined point in its movement to turn said lever, means controlled by the movement of a second-arm of I said lever when said lever is turned by said stop to stop the-rotation of the mandrel and also; 'to"still further turn said lever, and

-.jmeansj-actuatediby a third arm' of said lever th'es'top raising mechanism and allow the- 'stop to return to its normal position. 60' i lrajmandrel, a rotary shaft on whichsaid mandrel is mountel, a driving shaft, driving connections between said mandrel shaft and during-said further turning to disengage T12. Inqa machine 'for'm'aking fiber tubes,

said; driving shaft, a Iliangitudinally mov eeann able shifter shaft and means actuated therev by to disengage driving connection with the mandrel shaft, a spring which tends" to pull the shifter shaft in a direction to disengage said driving connection, a cam mounted on said shifter shaft, a lever mounted on a rocker shaft having one arm which normally engages said cam and prevents the longitudinal movement of said shifter shaft, a vertically movable bar carrying a stop projection, said lever having an arm which is engaged by said step when said bar has reached a certain elevation, intermediate mechanism connected with said mandrel shaft whereby said vertically movable stop is raised, thereby turning said lever when the mandrel has rotated a predetermined number'of times giving to said lever an initial rocking movement to partially release the first arm of said lever from said stop cam whereby the pull of said spring on the shifter shaft causes the engagement of a cam face on said cam with said lever to further turn said lever, thereby allowing the disengaging. of said driving connection with the mandrel shaft, clutch mechanism connected with said vertically movable stop carrying bar and its elevating mechanism,

said rocking lever also having an arm which throws said clutchwhen saidroeking lever is moved by said cam, thereby disengaging said vertically movable bar-from its driving connection and allowing it to return to its normal lowermost position.

13. In a machine for making tubes, a mandrel, a shaft which extends centrally through saidmandrel, a hinged arm whic has a bearing for said shaft at one end of the mandrel, a pintle for said arm on which the arm swings horizontally and is movable vertically, a movable bottom support for said hinged arm, movable means for holding said bottom support in position, where by the'a-rm is normally held in its upper A .most position to retain the bearing in engagement with the shaft, and means for moving said holding means for the support to allow the dropping of said arm and 4 bearing.

- 14. Ina machine for making tubes, a mandrel, a shaft which extends centrally through said mandrel, a hinged arm which has a bearing for'said shaft at one end of the mandrel, a pintle for said arm on which i the arm swings horizontally and is-movable vertically, a vertically movable support for,

.trally through said mandreh' a hinged bracket bearing for said shaft at one end of the mandrel, said bracket being movlzble vertically on its pintle, and hinged to swing horizontally away from the end of the mandrel, a movable support for holding said bracket normally in its elevated position and which is movable to allow said bracket to drop, a rotary cam for controlling the raising and lowering of said sup- ,port, a presser roll, a pivoted lever carry- ,ing said presser roll which is adapted to bear against the tube while being formed on the mandrel, connections between said lever and said cam whereby when the said bracket is lowered the presser roll will be 15 released from engagement with the tube on the mandrel and whereby when the bearing is raised again the presser roll will again be engaged with the tube. V

In testimony whereof I aifix my signa- 20 ture, in presence of two witnesses.

CASPER MEHLUM.

Witnesses :1

WILLIAM A. COPELAND. CARL H. JOHNSON. 

